ATENOR

Major Shareholding Notification • Apr 24, 2024

Publication of transparency notification

(Article 14, 1 st paragraph, of the Law of 2 May 2007 on disclosure of major holdings)

La Hulpe, 24 April 2024 (7:45 am CET)

1. Summary of the notification

Atenor received a transparency notification from Alva SA, 3D NV, Luxempart S.A., Stéphan Sonneville SA and ForAtenoR SA concerning the amendment of their shareholders' agreement to act in concert.

2. Notification concerning the amendment of the agreement to act in concert

The notification dated 18 April 2024 contains the following information:

Regulated information

Reason for the notification : Conclusion or modification of an agreement to act in concert

ForAtenoR SA

Notification by: Persons acting in concert

• Persons subject to the notification requirement:Alva SA, 3D NV, Luxempart SA, Stéphan Sonneville SA and
• Transaction date : 18 April 2024
• Threshold that is crossed (in %) : 50%
• Denominator : 43,739,703
• Notified details :

A) Voting rights	Previous notification	After the transaction
	# of voting rights	# of voting rights		% of voting rights
Holders of voting rights		Linked to securities	Not linked to securities	Linked to securities	Not linked to securities
Philippe Vastapane	0	0
Patricia Vastapane	0	0
Les Viviers SA	0	0
Alva SA	521,437
Sub-total	521,437
STAK Iberanfra	0	0
3D NV	13,157,350	13,157,350		30.08%
Sub-total	13,157,350	13,157,350		30.08%
Stéphan Sonneville	0	0
Stéphan Sonneville SA	1,109,624	1,109,624		2.54%
Sub-total	1,109,624	1,109,624		2.54%
Luxempart SA	6,819,439	4,373,970		10.00%
ForAtenoR SA	4,767,744	2,383,872		5.45%
	TOTAL	21,024,816	0	48.07%	0%

B) Equivalent financial	After the transaction
instruments
Holders of equivalent financial	Type of financial instrument	Expiration date	Exercise period or	# of voting rights that	% of voting
instruments			date	may be acquired if the	rights
				instrument is exercised
	TOTAL			0	0.00%
			TOTAL (A + B)	# of voting rights	% of voting
					rights
				21,024,816	48.07%

Full chain of controlled undertakings through which the holding is effectively held:

Alva SA is controlled by Les Viviers SA, a company incorporated under Luxembourg law. Les Viviers SA is controlled by Philippe Vastapane and Patricia Vastapane (physical persons).

3D NV is controlled by STAK Iberanfra. STAK Iberanfra is not controlled.

Stéphan Sonneville SA is controlled by Stéphan Sonneville (physical person).

Luxempart SA is not controlled.

3D NV holds the majority of the voting rights attached to all the shares of ForAtenoR SA, so that it is irrefutably presumed to (exclusively) control ForAtenoR SA (art. 1:14, §2, 1° of the CSA). At the same time, and without prejudice to the irrefutable presumption of (exclusive) control by 3D NV, 3D NV and Stéphan Sonneville SA exercise joint control over ForAtenoR SA by virtue of a shareholders' agreement.

Additional information

Regulated information

Alva SA exited the joint concert involving Alva SA, 3D NV, Luxempart SA, Stéphan Sonneville SA and ForAtenoR SA on 18 April 2024. The joint concert continues between 3D SA, Luxempart SA, Stéphan Sonneville SA, and ForAtenoR SA, although the number of shares with which they act in joint concert parties decreased on the same date.

3D NV, Luxempart SA, Stéphan Sonneville SA and ForAtenoR SA act in joint concert, and not the entities or individuals who control them.

Therefore, the numbers of shares mentioned in this transparency notification only pertain to the shares with which the parties act in joint concert. The parties may hold shares outside of the joint concert. The entities and individuals controlling the parties acting in joint concert parties may hold shares.

The notifications can be consulted in the section Enterprise / Company Governance / Regulated Information - Transparency of www.atenor.eu

Contact: Hans Vandendael for Real Serendipity CommV, International Legal Director – info@atenor.eu – Tel. +32 2 387.22.99

About Atenor

Atenor is a leading real estate developer at the forefront of sustainability and urbanity. Recognised for its commitment to urban resilience, Atenor takes an innovative approach in its mixeduse developments including offices, residential, and retail spaces, supported by its Research and Development department, Archilab. With an international presence and a diversified project portfolio, Atenor aims to generate returns for its investors through a value creation cycle starting from obsolete buildings. Listed on Euronext Brussels, Atenor stands as a key player in the real estate development sector.

To learn more about Atenor and its projects please visit us at www.atenor.eu or contact us at investors@atenor.be

Disclaimer

This press release is for information purposes only and is not a recommendation to engage in investment activities. This press release is provided "as is" without representation or warranty of any kind. While all reasonable case has been taken to ensure the accuracy of the content, Atenor does not guarantee its accuracy or completeness. Atenor will not be held liable for any loss or damages of any nature ensuing from using, trusting or acting on information provided. No information set out or referred to in this publication may be regarded as creating any right or obligation. All proprietary rights and interest in or connected with this publication shall vest in Atenor.

This press release speaks only as of this date. Atenor refers to Atenor SA and its affiliates.